ARCHIVED - 5.2.2.3.(1)

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5.2.2.3.(1)


Objective	OH1 Indoor Conditions
Attribution	[F20,F22-OH1.1,OH1.2,OH1.3]
Application	Application 1: Structural design procedures for building materials, components, assemblies and their interfaces described in Sentence 5.1.2.1.(1) that are installed in buildings to which Part 5 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 5]. Application 2: This also applies to cladding assemblies installed on buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9] where: the cladding assembly is not addressed in Section 9.27., or the cladding assembly does not comply with the prescriptive requirements of Section 9.27.
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Intent	Intent 1: To limit the probability that inappropriate procedures will be used for the structural design of environmental separators, which could lead to an inadequate resistance to expected structural loads on required environmental separation elements, which could lead to: vibration and deflection, damage and deterioration, or the inadequate control of: the total heat loss or gain due to air mass transfer or conduction, air infiltration and exfiltration, airborne vapour transfer from the interior above ground and from the exterior below ground, precipitation ingress due to air pressure differences, or condensation. This is to limit the probability of: the inadequate control of temperatures of interior spaces, drafts, relative humidity, or water accumulation, pollutant ingress, including soil gas, combustion products from parking garages, and particulates, the generation of pollutants from biological growth or from materials that become unstable on wetting, or deterioration, which could lead to compromised integrity of environmental separators. This is to limit the probability of: negative effects on the air quality of indoor spaces, the inadequate thermal comfort of persons, and contact with moisture. This is to limit the probability of harm to persons.
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